Hui-Ze Li, Yan Zhang, Bo-Yu Ni, Zhang-Yu Wu, Hao-Yu Cao, Fa-Cai Yan, Rui-Wen Tang, Ye Liu
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Research on the microstructure and mechanical properties of high-entropy composite ceramics
To investigate the microstructure and mechanical properties of HEB-SiC composite ceramics, various SiC contents (10 vol%, 20 vol%, 30 vol%) were incorporated as the second phase. (Mo0.2Nb0.2Zr0.2Hf0.2Ti0.2)B2-(10 vol%, 20 vol%, 30 vol%)SiC composite ceramics were synthesized using borothermal/carbothermal reduction followed by SPS. As the sintering temperature increased, the hardness of the composite ceramics remained relatively stable, while the fracture toughness showed a notable improvement. Additionally, with an increase in SiC content, the hardness of the composite ceramics decreased, whereas the fracture toughness increased. The highest hardness values were observed for the 10 vol% SiC samples, measuring 31.4 ± 1.4 GPa at 1800°C and 31.4 ± 1.3 GPa at 1900°C. The 30 vol% SiC sample sintered at 1900°C exhibited the highest fracture toughness, reaching 5.24 ± 0.44 MPa·m1/2. These findings demonstrate that increasing the SiC content enhances the mechanical properties of high-entropy boride ceramics.
期刊介绍：
The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas:
Nanotechnology applications;
Ceramic Armor;
Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors);
Ceramic Matrix Composites;
Functional Materials;
Thermal and Environmental Barrier Coatings;
Bioceramic Applications;
Green Manufacturing;
Ceramic Processing;
Glass Technology;
Fiber optics;
Ceramics in Environmental Applications;
Ceramics in Electronic, Photonic and Magnetic Applications;
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